RS PRO Roller Lever Subminiature Micro Switch, Solder Terminal, 4 A @ 28 V dc, SP-CO

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Subtotal (1 unit)*

£53.54

(exc. VAT)

£64.25

(inc. VAT)

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  • 14 unit(s) ready to ship
  • Plus 4 unit(s) ready to ship from another location
  • Plus 117 unit(s) shipping from 31 October 2025
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Units
Per unit
1 - 9£53.54
10 - 49£48.19
50 - 99£40.16
100 - 249£37.48
250 +£34.27

*price indicative

RS Stock No.:
333-322
Brand:
RS PRO
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Brand

RS PRO

Actuator Type

Roller Lever

Terminal Type

Solder

Contact Current Rating

4 A @ 28 V dc

Contact Configuration

SP-CO

Operating Force

1.952 N

Minimum Operating Temperature

-54°C

Maximum Operating Temperature

+121°C

Contact Material

Silver Plated

Mechanical Life

10⁷Operations

Voltage Rating

28 V dc, 250V ac

Release Force

0.988N

Operating Temperature Range

-54 → +121°C

COO (Country of Origin):
MX

RS PRO SPDT Lever Subminiature Microswitch


The precision snaps action for on/off applications is a synonym of Microswitch.

Today, we are proudly introducing our own branded RS PRO Miniature Micro Switch where current mechanical energy applied to an actuator provides a high-precision electrical output. The actuator type comes as a basic switch with unfitted actuator kit and fining hardware, offering you an impressive temperature operating range of -54°C up to +121°C allowing you full application flexibility.

Features and Benefits


  • The Switch provides high switching current

  • Where the space is prime, our ultra SPDT Microswitch is here to eliminate the issue

  • As a standard, our contact material is silver-plated

  • Contact rating: 7 A (resistive), 4 A (inductive), 250 V ac, 28 V dc

  • High-precision, presence/absence detection terminal

  • Ultra Subminiature and lightweight

  • Long operating life

  • High temperature designs for up to +400°F (204°C) for up to 100 hours

  • Supplied as a basic switch, plus unfitted actuator kit with fixing hardware

Applications


Microswitch fits perfectly with:

  • Appliances

  • Computer/business equipment

  • Communication equipment

  • HVAC (Heating, Ventilation, and Air Conditioning)

  • Manually operated devices

  • Medical, Dental equipment

  • Office equipment

  • Test instruments and timing devices

  • Valves and vending machines

  • Door interlocks

  • Microwave ovens

  • Elevators

Frequently asked questions


What are microswitches?

Microswitches are mechanically operated electrical switches designed with an actuator and terminals called common, normally open and normally closed. A microswitch is also known as a snap action switch; they operate by using a spring-loaded lever to open and close a set of internal contacts inside the unit.

How does a microswitch work?

Power is typically attached to the common terminal; this leads into the Switch and energises the spring and because the spring is touching the normally close pin it sends power out here, this is called a resting state. Once the arm is moved, the power is then transferred to the normally open pin.

Why RS PRO?


RS PRO is our family brand to go-to and brings you a wide range for high-quality and high-value products to support your project. Trusted by engineers all over the world, every part of every RS PRO product is always rigorously tested against demanding industry standards. We are only giving the RS PRO seal of approval if we are confident of their exceptional quality, which means you can be convinced too.

Approvals

UL; CSA

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